Your prototype is ready. Today we find out what it really does for your user.
Think of a book-rest that holds one book but tips with two. Engineers do not stop at the first build. They test, make one careful change, and share what the tests showed.
Today we work with success criteria: the clear checks that tell us if the design did the job for your user.
Like the book-rest that held one book but tipped with two, your checks should be that clear before you test.
Open your Design Brief. What three checks will prove your prototype works? Say them aloud to your partner before we test.
Test your prototype against every success criterion on your Design Brief.
For each check: try it the same way each time, watch carefully, and decide pass or not yet. Failing a check is useful: it tells you what to improve. Do not rebuild yet. Only test and notice.
On your Investigation Journal page, record the first test only.
For each success criterion write three things: the check, pass or not yet, and one thing you saw (for example, "tipped when we added the second book"). Write only those three things now. The one-sentence "what this means" comes after the re-test.
An improvement is one careful change after a test, chosen because the results showed a weakness.
Choose one change that the first test points to. On your Investigation Journal page, write that one change in a short sentence (for example, "widen the base with card"). Then make only that change to your prototype. Do not rebuild the whole design.
Unlock the full learning experience
You're previewing this lesson. Get full access to this lesson and hundreds more — each one ready to teach, with interactive activities, printable resources and pupil progress tracking built in.
This lesson is copyright of DigitalSkills.org 2017 - 2025. Unauthorised use, copying or distribution is not allowed.